If Proposition C had been approved, it would have made it a city policy that the city should "explore and facilitate the acquisition of Alcatraz Island from the United States Government to transform it into a Global Peace Center."

Path to the ballot

The San Francisco Department of Elections certified on August 23, 2007 that Proposition C had qualified for the ballot because at least 10,396 valid signatures were submitted to that end. 10,396 was the number of signatures required for certification because it was 5% of the total number of voters cast for Mayor in 2003.